Microchip Technology MADA3KP15AE3

Overview

MDA3KP15AE3 from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array with 15 V standoff voltage (VWM), 16.7–18.5 V breakdown range (V(BR)), and 24.4 V maximum clamping voltage (VC) at 123 A peak pulse current. It delivers sub-100 ps response for ESD, EFT, and secondary lightning protection in telecom power interfaces and industrial I/O circuits.

For engineers reviewing the MDA3KP15AE3 datasheet, MDA3KP15AE3 pinout, MDA3KP15AE3 application, or MDA3KP15AE3 equivalent, key selection criteria include its 15 V working voltage, 3000 W 10/1000 µs surge rating, RoHS-compliant e3 plating, -55°C to +150°C operating range, and verified compliance with IEC61000-4-2/4-4/4-5 Class 1–4 test levels.

Technical Context

The MDA3KP15AE3 operates as a unidirectional avalanche diode array optimized for fast transient suppression in DC power rails and signal lines. Its design integrates thermally robust epoxy packaging and tin-lead–free matte-tin (e3) terminations per MIL-STD-750 Method 2026, enabling reliable reflow soldering and long-term stability under thermal cycling.

It meets IEC61000-4-5 secondary lightning requirements across multiple source impedances: 42 Ω (Class 1–4), 12 Ω (Class 1–3), and 2 Ω (Class 2 only). Standby leakage is limited to ≤2 µA at 15 V, and clamping performance is validated at 123 A IPP with <24.4 V VC under 10/1000 µs waveform.

Key Specifications

Pinout & Package

MDA3KP15AE3 uses a 3-pin surface-mount package with void-free UL94V-0 epoxy body. Pin 1 is cathode (marked by dot), pins 2 and 3 are anode and common cathode respectively per standard TVS array configuration. Polarity follows odd-numbered pins = cathodes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient suppression applications.

Compared with SMBJ15A and SMCJ15A, the MDA3KP15AE3 provides double the surge energy handling of SMCJ15A and five times that of SMBJ15A-making it the only option among the three qualified for Class 4 secondary lightning per IEC61000-4-5 with 42 Ω source impedance.

Availability

MDA3KP15AE3 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, automotive body electronics, and medical diagnostic equipment requiring stable component supply and long-term lifecycle support.

Supply support for MDA3KP15AE3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microsemi Corporation (now part of Microchip Technology) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, communications, and industrial markets.

The MDA3KP series targets high-energy transient protection in mission-critical systems, emphasizing MIL-PRF-19500 screening readiness, wide temperature operation, and repeatable clamping performance under extreme surge conditions.

FAQ

What is the clamping voltage of MDA3KP15AE3 at its rated peak pulse current?

The MDA3KP15AE3 has a maximum clamping voltage (VC) of 24.4 V at its rated peak pulse current (IPP) of 123 A under 10/1000 µs waveform conditions. This value is measured per IEC61000-4-5 test methodology and guarantees that downstream circuitry remains below 24.4 V during worst-case surge events. The MDA3KP15AE3 maintains this clamping performance across its full operating temperature range of -55°C to +150°C.

Is MDA3KP15AE3 RoHS compliant and what does the 'e3' suffix indicate?

Yes, MDA3KP15AE3 is RoHS compliant, as confirmed by the 'e3' suffix in its part number. Per Microsemi's nomenclature, 'e3' denotes annealed matte-tin plating meeting RoHS Directive 2011/65/EU requirements-lead-free, halogen-free, and compatible with standard Pb-free reflow profiles. The MDA3KP15AE3 also complies with IPC/JEDEC J-STD-020B Level 1 moisture sensitivity, eliminating need for dry-pack or baking prior to assembly.

Can MDA3KP15AE3 be used for bidirectional transient suppression?

No, MDA3KP15AE3 is a unidirectional TVS device, as indicated by the absence of 'C' in its part number. Bidirectional variants (e.g., MDA3KP15CE3) are available separately with symmetrical clamping for AC-coupled or differential signal lines. Using MDA3KP15AE3 in bidirectional applications risks reverse-bias breakdown and permanent damage. Always verify polarity alignment: Pin 1 is cathode, and the device must be installed with cathode toward the protected line's ground reference.

What IEC standards does MDA3KP15AE3 meet for electromagnetic immunity testing?

MDA3KP15AE3 is validated for IEC61000-4-2 (ESD ±8 kV contact/±15 kV air), IEC61000-4-4 (EFT ±2 kV), and IEC61000-4-5 (lightning surge) across Class 1–4. Specifically, it supports Class 4 at 42 Ω source impedance, Class 3 at 12 Ω, and Class 2 at 2 Ω. These ratings are documented in Microsemi RF01243 Rev B and confirmed via surge testing per Figure 2 waveform. The MDA3KP15AE3 achieves this with ≤2 µA standby current at 15 V, ensuring no interference with system-level immunity margins.

What is the thermal derating behavior of MDA3KP15AE3 above 25°C ambient?

MDA3KP15AE3 follows a linear thermal derating curve starting at 25°C, reducing peak pulse power capability by approximately 1.2% per °C rise to 150°C junction temperature. At 100°C, its PPP drops to ~1500 W; at 125°C, to ~1000 W. Derating is defined in Figure 3 of RF01243 Rev B and applies to both single-pulse and repetitive surge conditions with ≤0.05% duty cycle. This behavior ensures safe operation in enclosed enclosures or high-temperature industrial environments where the MDA3KP15AE3 may be deployed.